EduSahara™ Assignment
Name : Median of Raw Data
Chapter : Mean and Median of Ungrouped Data
Grade : ICSE Grade IX
License : Non Commercial Use
Question
1
1.
The scores obtained by 12 students in a test are given below. Find the median.
1
13
20
5
19
8
19
7
8
4
7
20
(i)
20
(ii)
1
(iii)
7
(iv)
10
11
12
(v)
8
Question
2
2.
Find the median of all prime numbers between 30 and 80.
(i)
58
(ii)
56
(iii)
55
(iv)
57
(v)
54
Question
3
3.
Find the median of all the factors of 40.
(i)
13
2
(ii)
25
4
(iii)
15
2
(iv)
7
(v)
11
2
Question
4
4.
Find the median of first 9 whole numbers.
(i)
3
(ii)
5
(iii)
1
(iv)
7
(v)
4
Question
5
5.
Find the median of all the factors of 30.
(i)
11
2
(ii)
13
2
(iii)
6
(iv)
9
2
(v)
21
4
Question
6
6.
Find the median of the first 10 odd numbers.
(i)
8
(ii)
10
(iii)
12
(iv)
9
(v)
11
Question
7
7.
Find the median of the first 20 even numbers.
(i)
19
(ii)
22
(iii)
20
(iv)
21
(v)
23
Question
8
8.
The marks obtained by 13 students in a test are given below. Find their median marks.
36
21
8
41
16
32
31
23
10
33
19
22
14
(i)
19
(ii)
23
(iii)
21
(iv)
24
(v)
22
Question
9
9.
Heights of 12 students (in cm) are given below. Find the median height.
153
141
171
166
139
164
170
162
147
149
166
130
(i)
319
2
cm
(ii)
315
2
cm
(iii)
317
2
cm
(iv)
158
cm
Question
10
10.
Heights of 12 plants (in cm) are given below. Find the median height.
98
53
68
83
94
80
78
77
64
87
54
63
(i)
159
2
cm
(ii)
157
2
cm
(iii)
78
cm
(iv)
155
2
cm
Question
11
11.
Ages of 11 students (in years) are given below. Find the median age.
12
13
11
13
15
10
14
15
13
12
14
(i)
15
years
(ii)
14
years
(iii)
12
years
(iv)
11
years
(v)
13
years
Question
12
12.
Rainfall of 10 days (in mm) are given below. Find the median rainfall.
9
8
11
14
8
10
8
5
15
13
(i)
10
mm
(ii)
23
2
mm
(iii)
21
2
mm
(iv)
19
2
mm
Question
13
13.
Scores of 11 students are given below. Find the median score.
86
89
77
77
88
76
82
90
87
81
85
(i)
86
(ii)
84
(iii)
85
(iv)
87
(v)
83
Question
14
14.
Temperatures of 10 days (in °C) are given below. Find the median temperature.
34
32
35
30
35
31
34
28
27
25
(i)
32
°C
(ii)
63
2
°C
(iii)
67
2
°C
(iv)
65
2
°C
Question
15
15.
Weights of 13 students (in kg) are given below. Find the median weight.
52
54
60
40
53
56
58
56
40
58
55
60
58
(i)
55
kg
(ii)
57
kg
(iii)
56
kg
(iv)
58
kg
(v)
54
kg
Question
16
16.
Daily wages of 10 labourers (in ₹) are given below. Find the median wage.
431
477
320
304
341
326
442
405
473
425
(i)
₹
417.00
(ii)
₹
414.00
(iii)
₹
415.00
(iv)
₹
413.00
(v)
₹
416.00
Question
17
17.
The observations of an ungrouped data are
x
1
,
x
2
,
2x
1
and
x
1
<
x
2
<
2x
1
.
If the mean and median of the data are equal to
6
,
find the observations of the data
(i)
8
,
6
,
12
(ii)
5
,
6
,
10
(iii)
8
,
6
,
16
(iv)
4
,
6
,
8
Question
18
18.
The observations of an ungrouped data are
x
1
,
x
2
,
x
3
and
x
1
<
x
2
<
x
3
.
If the mean and median of the data are
42
and
28
respectively and
x
3
-
x
1
=
70
,
find
x
1
,
x
2
,
x
3
(i)
18
,
28
,
88
(ii)
14
,
28
,
84
(iii)
16
,
28
,
86
(iv)
28
,
28
,
168
Question
19
19.
Given an even number of random samples with the middle two samples as
x +
15
and x +
19
and the median as
27
,
find the value of x.
(i)
7
(ii)
9
(iii)
10
(iv)
12
(v)
11
Assignment Key
1) (v)
2) (ii)
3) (i)
4) (v)
5) (i)
6) (ii)
7) (iv)
8) (v)
9) (ii)
10) (iv)
11) (v)
12) (iv)
13) (iii)
14) (ii)
15) (iii)
16) (iii)
17) (iv)
18) (ii)
19) (iii)
